上传图片到服务器

Question

我使用下面的代码： http://androidexample.com/Upload_File_To_Server_-_Android_Example/index.php?view=article_discription&aid=83&aaid=106

IT WORKS！

我想知道我将发送的图片是几秒钟前用相机拍摄的图片。 所以..我创建了一个简单的方法来拍摄照片，然后这个OnActivityResult：

protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (requestCode == CAMERA_PIC_REQUEST) { 
     //2 
     Bitmap thumbnail = (Bitmap) data.getExtras().get("data"); 
     //3 
     ByteArrayOutputStream bytes = new ByteArrayOutputStream(); 
     thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, bytes); 
     //4 
     File file = new File(Environment.getExternalStorageDirectory()+File.separator + "guasto.jpg"); 

     try { 
      file.createNewFile(); 
      FileOutputStream fo = new FileOutputStream(file); 
      //5 
      fo.write(bytes.toByteArray()); 
      fo.close(); 

     uploadFile(uploadFilePath + "" + uploadFileName); //this should call the working method to upload the picture 

     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 

的问题是，上传不了，它正确执行这行代码之前停止：

dos = new DataOutputStream(conn.getOutputStream()); 

我该怎么办才能解决问题......？ 非常感谢你

Answer 1

尝试以下代码。创建一个异步任务并在doInBackground方法中添加代码。你将得到InputStream的对象。

您应该使用Multipart实体。

 File file = new File(selectedImage); 
     ContentBody cbFile = new FileBody(file, "image/*"); 
     MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); 
     reqEntity.addPart(RequestParams.POST, cbFile); 
     DefaultHttpClient httpClient = new DefaultHttpClient(); 
     HttpPost httpPost = new HttpPost("http://yourwebserveraddress.com/apiname_or_whatever_path_it_is"); 

     httpPost.setEntity(reqEntity); 

     HttpResponse httpResponse = httpClient.execute(httpPost); 
     HttpEntity httpEntity = httpResponse.getEntity(); 
     InputStream is = httpEntity.getContent(); 

Where selectedImage是图像的路径。